Tutto Bene, Ballston, web site, 501 N. Randolph Street, Arlington, VA, 703-522-1005, just off Glebe Road, across from the Harris Teeter (Metro Trip Planner – opens in new window) [Washingtonian | WaPo | City Paper | Yelp | openlist | Citysearch]
Bolivian food on weekends, certainly good but not my first choice for Bolivian (menu here). I actually prefer the Italian dishes here, it is an Italian restaurant most of the time, very tasty. Tastes like the Italian food you get in South America, which is usually excellent, perhaps because it is especially rich. The ravioli are my favorite.